Friday, November 18, 2022

Friday, November 18, 2022 12:00 to 12:00 PM EST

Title: Approximation algorithms for stochastic orienteering  

Speaker: Madison Van Dyk Affiliation: University of Waterloo Location: MC 6029 or contact Rian Neogi for Zoom link

Abstract: This week we revisit the stochastic orienteering problem in which we are given a metric graph where each node has a deterministic reward and a random size. The goal is to adaptively decide on which nodes to visit to maximize the expected reward, while not exceeding the budget B on the distance plus the size of jobs processed.

Friday, November 18, 2022 3:30 PM EST

Title: Approximating Weighted Connectivity Augmentation below Factor 2

Speaker: Vera Traub Affiliation: Research Institute for Discrete Mathematics, University of Bonn Location: MC 5501 or contact Melissa Cambridge for Zoom link

Abstract:  The Weighted Connectivity Augmentation Problem (WCAP) asks to increase the edge-connectivity of a graph in the cheapest possible way by adding edges from a given set. It is one of the most elementary network design problems for which no better-than-2 approximation algorithm has been known, whereas 2-approximations can be easily obtained through a variety of well-known techniques.

S M T W T F S
26
27
28
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
  1. 2023 (105)
    1. September (6)
    2. August (7)
    3. July (19)
    4. June (21)
    5. May (12)
    6. April (5)
    7. March (17)
    8. February (10)
    9. January (8)
  2. 2022 (150)
    1. December (8)
    2. November (18)
    3. October (15)
    4. September (11)
    5. August (2)
    6. July (17)
    7. June (17)
    8. May (10)
    9. April (12)
    10. March (18)
    11. February (10)
    12. January (13)
  3. 2021 (103)
  4. 2020 (119)
  5. 2019 (167)
  6. 2018 (136)
  7. 2017 (103)
  8. 2016 (137)
  9. 2015 (136)
  10. 2014 (88)
  11. 2013 (48)
  12. 2012 (39)
  13. 2011 (36)
  14. 2010 (40)
  15. 2009 (40)
  16. 2008 (39)
  17. 2007 (15)